Sn51dp Datasheet Verified
: The SN510P is a functionally similar variant often used interchangeably, though it may offer minor internal enhancements for signal integrity. Pinterest - ピンタレスト Purchase & Availability
) to provide the gate drive voltage for the high-side MOSFET.
The SN51DP is housed in a compact, surface-mount . It operates as a highly integrated Pulse Width Modulation (PWM) controller engineered to drive external MOSFET switches in boost topologies. LED driver IC replacement.
The following values are directly extracted from the and are not theoretical maximums. Exceeding any of these, even momentarily, voids the component’s reliability.
The SN51DP's high-speed PWM capabilities are useful in several power management tasks. sn51dp datasheet verified
Error amplifier compensation node; paired with RC networks for loop stability stabilization. OVP
In the field of electronics repair, the SN51DP is often linked to . Technicians frequently reference a "verified" modification to remove protection by connecting a 10K resistor from pin 9 to Ground (GND) . Common uses include:
The SN51DP datasheet is reliable for new designs. No errata found in Rev 2.3 or later.
| Pin | Name / Function | Verified Measured Voltage (Example) | Description / Verified Notes | | :--- | :--- | :--- | :--- | | | Power Input (VIN) | 12V | Primary power supply for the IC's internal driver stage. | | 2 | Enable / On/Off Control | 0V (Off) / >2V (On) | A logic-high signal here typically enables the backlight driver. | | 3 | Feedback / Current Sense | Varies | Connected to a current-sensing resistor to monitor LED current for regulation. | | 4 | Over-Current Protection (OCP) | Varies | Monitors the current. If too high, the IC shuts down to protect the circuit. | | 5 | Dimming Control (PWM) | 2.5V (Typical) | Receives a PWM signal to control the brightness of the backlight. | | 6 | Ground (GND) | 0V | Common ground reference for the IC. | | 7 | Oscillator / Timing | Varies | An external resistor or capacitor sets the internal switching frequency. | | 8 | Gate Drive Output | Varies | Drives the external MOSFET that switches the main current through the LED inductor. | | 9 | Over-Voltage Protection (OVP) | ~1.55V (Normal) / 0.8V (Fault) | Monitors the boosted output voltage. Critical for verifying proper operation . | | 10 | Reference / Compensation | 3.1V (Typical) | Often provides an internal voltage reference or compensation network connection. | : The SN510P is a functionally similar variant
Standalone Digital Pulse Width Modulator (DPWM) / LED Driver. Package Type: Typically SSOP-10 (10 pins) or MSOP-10 .
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The SN51DP datasheet provides detailed electrical characteristics, including:
When an LCD display loses its backlight but the audio remains fully functional, the issue can often be traced back to the driver array. It operates as a highly integrated Pulse Width
He reached for the toggle switch. "Time to see if the magic smoke stays in," he muttered.
A frequent failure profile on TV repair benches involves the television displaying the logo for 2–3 seconds before the backlight shuts off completely. This symptom points to the SN51DP detecting an anomaly (such as an open or leaking LED string) and entering . Diagnostic Step-by-Step
Standalone digital PWM (DPWM) IC for LED lighting and DC motor speed control. Key Features: On-chip 3.3V regulator. Programmable resolution up to 8-bits. Integrated ESD protection for I/O pins.